Slimer attachment for concentrating-tables.



PATENTED JUNE 9, 1903.

C. T. ARKINS. SLIMER ATTACHMENT FOR OONGBNTRATING TABLES.

APPLICATION FILED SEPT. 27, 1902.

no MODEL.

1N VEN TOR. 6i 5. Z

UNITED STATES Patented June 9, 1903.

ATENT FFICE.

CHARLES T. ARKINS, OF DENVER, COLORADO.

SLIMER ATTACHMENT FOR CONCENTRATING-TABLES.

SPECIFICATION forming part of Letters Patent No. 730,732, dated June 9,1903. Application filed September 27,1902. $erial Ito-125,101. (Nomodel.)

1'0 all whom, it may concern:

Be it known that 1, CHARLES T. ARKINs, a citizen of the United States ofAmerica, residing at Denver, in the county of Arapahoe and State ofColorado, have invented certain new and useful Improvements in SlimeAttachments for Concentrating-Tables; and I do declare the following tobe a full, clear, and exact description of the invention, such as willenable others skilled in the art to which it appertains to make and usethe same, reference being had to the accompanying drawings, and to thefigures of reference marked thereon,which form apartofthisspecification.

My invention relates to improvements in slime attachments forconcentrating-tables of the class set forth in my previous application,SerialNo. 85,146, filed December 9, 1901, allowed July 7, 1902.

My object is to increase the saving of the mineral values in connectionwith this class of concentrators; and to this end theinvention consistsof the features, arrangements, and combinations hereinafter describedand claimed, all of which will be fully understood by reference to theaccompanying drawings, in which is illustrated an embodiment thereof.

In the drawings, Figure 1 is a side elevation of a concentrating-tableprovided with my improved slime-saving attachment. Fig. 2 is a verticallongitudinal section taken on the line 2 2, Fig. 3, the parts beingshown on a larger scale. Fig. 3 is a section taken on the line 3 3, Fig.1, on a larger scale. Fig. 4. is a perspective view of a bracket forminga part of my improved device.

The same reference characters indicate the same parts in all the views.

Let the numeral 5 designate a transverselyinclined concentrating-tablehaving a longitudinally-reciprocating movement or vibration whosetendency is to carry the material thereon from the head or right-handextremity of the table toward the left or tail thereof.Aconventionaloperatingdeviceisshown in the drawings, connected with thehead of the table and designated by the numeral 6.

My improved device is mounted on the lower or gangue-discharge edge ofthe table and extends from the'foot or tail thereof toward the head ofthe table a suitable distance. It may, if desired, extend the entirevibration. by mesh material, as wire-screen 16, which,

length of the table. The greater proportion of the'loss of mineralvalues with the gangue is toward the tail of the table. Hence myimproved device is shown in the drawings extending from the tail of thetable about half its length.

To the lower edge of the table 5 is attached a bracket 7, provided withtwo laterally-extending lugs 8, one located at each extremity of thebracket. The upper extremity of each lug is. grooved, as shown at 9, toform a race or seat for the ball-bearings 10. Mounted to reciprocate orvibrate on this bracket is a trough or receptacle 12, whose extremitiesare provided with depending lugs, grooved, as shown at 13, to engage theball-bearings 10 from above. The receptacle 12 is provided with adepending housing 14, which surrounds the bracket and protects theball-bearin gs and their engaging parts from contact with dirt orforeign matter, which otherwise might interfere'with the proper workingof the device; The trough 12 is loosely mounted on the bracket to permitan independent vibratory movement thereon as the table is actuated, asaforesaid. The bracket 7 is provided with a guide-pin 15 at eachextremity. These pins pass through openings formed in the ends 14 of thetrough-housing and support the trough, whereby the latter is preventedfrom turning on the bracket. Theopenings in the housing for the pins areof sufficient size to allow the trough perfect freedom of movement forthe purpose of longitudinal The top of the trough is covered as shown inthe drawings, is secured in place by bending down its edges uponthe-sides of the trough and applying thereto cleats or strips 17, whichare fastened to the trough by suitable devices. As shown in thedrawings, the screen 16 is inclined to correspond with the inclinationof the table, and the latter is provided with a plate 18, attached toits lower edge and overlapping the screen 16, whereby the discharge fromthe lower edge of the table passes to the screen.

From the foregoing description it will be understood that as the tableis reciprocated longitudinally or in the direction of its length, asheretofore described, a longitudinal vibration will be imparted to thetrough 12, which rides on the ball-bearings 10 and is mounted on thebracket to permit independent vibration resulting from the movement ofthe table to which the bracket is attached. This movement of thetrough'agitates the material on the screen 16 and causes the finemineral values to pass therethrough into the trough. The contents of thetrough, whose bottom is hopper-shaped, may be drawn oif through anopening 12 and returned to the table for retreatment or carried toanother table, (not shown,) as may be desired.

The receptacle 12 is provided with rods 19, which extend downwardly fromits bottom (see Fig. 2) in front of the ball-races and thence underneaththe latter, as shown at 19, occupying positions in the bottom of thegrooves formed in the top of the lugs 8, the construction being suchthat the trough or receptacle is free to move on the bracket. These rodsmake it impossible for the balls 10 to escape from the ball-races.

Having thus described myinvention, what I claim is 1. The combinationwith a transversely-inclined concentrating-table having a vibratorymovement, of a receptacle connected with the lower edge of the table andrelatively movable, the said receptacle having a mesh covering toreceive the discharge from the table.

2. The combination with a concentratingtable, of a bracket attachedthereto, and a receptacle loosely mounted on the bracket and providedwith a mesh covering arranged to receive the discharge from the table,the connection between the bracket and trough being such as to allow thereceptacle an independent vibration imparted by the tables movement.

3. The combination with a vibratory concen crating-table, ot a bracketattached thereto, a trough loosely mounted on the bracket to permitindependent vibration, and a ballbearing connection between'the troughand the bracket, substantially as described.

4. The combination with a vibratory concentrator, of a receptacleprovided with a mesh covering, and arranged to receive the dischargefrom the table, said receptacle being mounted on the table andrelatively movable.

5. The combination with a Vibratory concentrating-table, of a bracketmounted thereon, a receptacle provided with a mesh covering, looselymounted on the bracket, ballbearings interposed between the engagingparts of the bracket and the receptacle, and a housing extendingdownwardly below the bearing parts and arranged to protect the latter,substantially as described.

6. The combination with a transversely-inclined,longitudinally-reciprocating concentrating-table, of a bracket attachedto the lower edge of the table and provided with lugs at its extremitieshaving ball seats or races formed in their upper extremities, a troughloosely mounted on said bracket and provided at its extremities withball-bearing parts, ballinterposed between the trough and bracket, tofacilitate independent vibration, the said trough being covered withmesh material and arranged to receive the discharge from the lower edgeof the table, the trough being also provided with a skirt or dependinghousing surrounding the ball bearing parts, substantially as described.

In testimony whereof I affix my signature in presence of two witnesses.

CHARLES T. ARKINS.

Witnesses:

DENA NELSON, A. J. OBRIEN.

